EX-15.1 3 c83750a1exv15w1.txt LETTER OF DELOITTE & TOUCHE LLP EXHIBIT 15.1 May 28, 2004 Tenneco Automotive Inc. 500 North Field Drive Lake Forest, Illinois 60045 We have made a review, in accordance with standards of the Public Company Accounting Oversight Board (United States), of the unaudited interim financial information of Tenneco Automotive Inc. and consolidated subsidiaries for the periods ended March 31, 2004 and 2003, as indicated in our report dated May 3, 2004; because we did not perform an audit, we expressed no opinion on that information. We are aware that our report referred to above, which was included in your Quarterly Report on Form 10-Q for the quarter ended March 31, 2004, is being incorporated by reference in this Amendment No. 1 to Registration Statement No. 333-114295 of Tenneco Automotive Inc. on Form S-4. We also are aware that the aforementioned reports, pursuant to Rule 436(c) under the Securities Act of 1933, are not considered a part of the Registration Statement prepared or certified by an accountant or a report prepared or certified by an accountant within the meaning of Sections 7 and 11 of that Act. /s/ DELOITTE & TOUCHE LLP Chicago, Illinois